|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Advanced High Strength Steels IV
||Effect of High Temperature Processes on Dual Phase Steel Manufacture
||Bharath Bandi, Joost van Krevel, Sukalpan Nandi, Prakash Srirangam
|On-Site Speaker (Planned)
This research work demonstrates the interplay between ferrite recrystallization, grain growth, and austenite formation processes during Dual-Phase steel manufacture of hot rolled (HR) and cold reduced steels (CR). Heat treatments were carried out at inter-critical temperatures using varying heating rates. Hardness results show that the ferrite grain growth is dominating process for both CR and HR steel at lower inter-critical temperature (715-730 0C) and lower heating rates (0.2 0C/s). With increasing heating rates (~50.5 0C/s) for the same inter-critical temperatures, ferrite grain growth became less progressive, but ferrite recrystallization and austenite formation occurred simultaneously for CR steels, while in HR steels, only austenite formation was observed. However, at higher temperatures and higher holding times (>100s) austenite formation became the dominating process for both the steels. For higher heating rates, hardness values of CR steels were found to be decreasing first and then increasing with increase in holding times.
||Planned: Supplemental Proceedings volume